/*
* Interrupt service routine
*
* Attends to TWL 4030 power module interruptions events,
* specifically USB_PRES (USB charger presence) CHG_PRES (AC charger presence) events
*
*/
static irqreturn_t twl4030charger_interrupt(int irq, void *dev_id)
{
u8 int_src, clear = 0;
int ret;
/* Reading interruption source*/
ret = twl4030_i2c_read_u8(TWL4030_MODULE_INT, &int_src, REG_PWR_ISR1);
if (ret)
return IRQ_NONE;
/* Addition to enable shared interrupt */
if(!(int_src & (USB_PRES | CHG_PRES)))
return IRQ_NONE;
/* Cleaning interruption flags */
clear = (int_src & USB_PRES)? (clear | USB_PRES): clear;
clear = (int_src & CHG_PRES)? (clear | CHG_PRES): clear;
ret = twl4030_i2c_write_u8(TWL4030_MODULE_INT,
clear, REG_PWR_ISR1);
if (ret)
return IRQ_NONE;
/* fuction to handle charger presence events */
ret = twl4030charger_presence_evt();
if(ret == -ENXIO)
twl4030charger_hw_presence_en(EVT_DISABLE);
if(ret)
return IRQ_NONE;
return IRQ_HANDLED;
}
/*
* API function
*
* Registers the event handler structure
*
* Return 0 on success
* <0 on failure
*/
int twl4030battery_event_register(struct twl4030battery_events events)
{
twl4030battery_event.battery_level = events.battery_level;
twl4030battery_event.battery_presence = events.battery_presence;
twl4030battery_event.charger_presence = events.charger_presence;
twl4030battery_event.bci_status = events.bci_status;
twl4030battery_event.battery_sw_level_event_cfg = (
events.battery_sw_level_event_cfg & (EVT_LVL_4_EN |
EVT_LVL_3_EN | EVT_LVL_2_EN | EVT_LVL_1_EN)) ;
if(events.battery_level == NULL)
{
twl4030battery_hw_level_en(EVT_DISABLE);
}
else
{
twl4030battery_hw_level_en(EVT_ENABLE);
twl4030battery_level_evt();
}
if(events.battery_presence == NULL)
{
twl4030battery_hw_presence_en(EVT_DISABLE);
}
else
{
twl4030battery_hw_presence_en(EVT_ENABLE);
twl4030battery_presence_evt();
}
if(events.charger_presence == NULL)
{
twl4030charger_hw_presence_en(EVT_DISABLE);
}
else
{
twl4030charger_hw_presence_en(EVT_ENABLE);
twl4030charger_presence_evt();
}
if(events.bci_status == NULL)
{
twl4030bci_sw_status_en(EVT_DISABLE);
flush_scheduled_work();
}
else
{
twl4030bci_status_tmr.expires = jiffies + CHG_STS_DLY;
add_timer(&twl4030bci_status_tmr);
twl4030battery_event.temp_std = -1;
twl4030bci_status_evt();
}
return 0;
}
/*
* Interrupt service routine
*
* Attends to TWL 4030 power module interruptions events, specifically
* USB_PRES (USB charger presence) CHG_PRES (AC charger presence) events
*
*/
static irqreturn_t twl4030charger_interrupt(int irq, void *_di)
{
#ifdef CONFIG_LOCKDEP
/* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
* we don't want and can't tolerate. Although it might be
* friendlier not to borrow this thread context...
*/
local_irq_enable();
#endif
twl4030charger_presence_evt();
return IRQ_HANDLED;
}
